Time dependence of the intensity (A), and the <i>d</i>-spacing (B) of the first order reflection of the rapidly formed H<sub>2</sub> phase referring to the experiment given in Figure 4.YaghmurAnanLaggnerPeterSartoriBarbaraRappoltMichael2013<p>The solid red line shows the best single exponential fit to the data. The time constant, <i>k</i>, was determined to be 0.10±0.03 and 0.12±0.02 sec<sup>−1</sup> for panels (A) and (B), respectively.</p>